Each Friday, Blue Sky takes readers inside the city’s most creative office spaces. From sprawling, high-budget outposts to cozy timber loft spaces, Chicago companies take different approaches to carving out their own places to work. Here are Blue Sky’s favorite tours of 2015, based on our own informal...

Chicago tech companies had a prolific year, marked by soaring valuations, major acquisitions and notable changes at local organizations. But new taxes and financial struggles stymied some companies as well. Click through for the year’s biggest Chicago tech stories. — Amina Elahi

From the opening of a new home for Chicago healthtech startups to a number of big-ticket acquisitions, healthcare innovation in Chicago took a few big steps forward in 2015. Click through for a few of the year’s biggest health stories.

LATEST: Major MBA schools by the numbers | Many Chicago-area schools that offer MBAs give students a choice of part-time (including evening and weekend options), flexible, full-time, accelerated, dual-degree, international and other programs.

LATEST: PATRICK ALLIN, TEXTURA | The process of taking a company public necessarily impacts some of its operations. But the one thing it shouldn’t affect is employees’ focus, said Patrick Allin, co-founder and CEO of Textura, which provides collaboration software for the construction industry.

LATEST: MEATPACKING | The forefathers included a Detroit butcher convinced meat would ship fresh if refrigerated like fruit, a child of Cape Cod farmers who followed the cattle-buying market West and a frontier tycoon who sunk his grain-trading profits into a new business beside the largest stock...